Titanium alloy and preparation method thereof

A technology of titanium alloy and intermediate alloy, applied in the field of titanium alloy and its preparation, to achieve the effect of improving yield and service life, good cold and hot processing performance, and easy cutting

Inactive Publication Date: 2018-03-02
BEIJING JINYU SHUNDA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in order to meet the needs of wider applications, the comprehensive properties of existing titanium alloy materials, including mechanical properties, need to be further improved.

Method used

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  • Titanium alloy and preparation method thereof
  • Titanium alloy and preparation method thereof
  • Titanium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Preparation of various formula titanium alloy materials

[0024] Adopt the following method to prepare the titanium alloy material of each formula composition in Table 1 (the content of each substance is the weight percent content; All do not contain vanadium in each formula titanium alloy material; The total amount of carbon, hydrogen, oxygen, nitrogen in each formula unavoidable impurity The weight percentages are all less than 0.4% of the total weight of the titanium alloy).

[0025] Alloy materials are prepared according to the composition of each formula, and the required sponge titanium, aluminum-iron master alloy, aluminum-chromium master alloy, aluminum-molybdenum master alloy, aluminum-silicon master alloy are mixed and pressed into electrodes, and smelted twice in a vacuum consumable furnace Or obtain the alloy ingot three times (smelting vacuum degree requirement is lower than 1Pa). After peeling the ingot, cutting off the riser and tail, the b...

Embodiment 2

[0028] Embodiment 2: The mechanical property detection of each formula titanium alloy material

[0029] According to the national standard GB / T 228.1-2010, the titanium alloy rods prepared according to the formulations of Example 1 were made into tensile samples, and comprehensive mechanical properties were tested at room temperature. The test results are shown in Table 2 below.

[0030] Table 2 Mechanical property test results of each formula titanium alloy material

[0031]

[0032] It can be seen from the data in Table 2 above that the titanium alloy of the present invention has high strength and obviously better mechanical properties.

Embodiment 3

[0033] Example 3: Comprehensive performance detection of various formula titanium alloy materials except mechanical properties

[0034] According to the relevant detection standards of national standard GB / T 228-2002, NB / T 47014-2011 (JB / 4708), GB / T 229-2007, the titanium alloy material of each formula of embodiment 1 is made into test specimen, respectively The fatigue limit, strength coefficient of welded joints and impact energy were tested, and the test results are shown in Table 3 below.

[0035] Table 3 The comprehensive performance test results of each formula titanium alloy material except mechanical properties

[0036]

[0037]

[0038] It can be seen from the data in Table 3 above that the titanium alloy material of the present invention has significantly better comprehensive properties.

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Abstract

The invention belongs to the technical field of alloy materials, and relates to a titanium alloy and a preparation method thereof, wherein the titanium alloy mainly contains titanium, and further contains, by weight, 4-7.5% of aluminum, 0.2-2% of iron, 0.1-2% of chromium, 0.5-2.5% of molybdenum, and trace unavoidable impurities. The titanium alloy of the present invention has excellent comprehensive performances such as mechanical property.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and relates to a titanium alloy and a preparation method thereof. Background technique [0002] Due to its excellent comprehensive properties, high-strength titanium alloys have been more and more widely used in the aerospace industry. On the one hand, the use of high-strength titanium alloys in the engines of commercial airliners, transport aircraft, helicopters, and fighter jets is increasing; Alloys are also used in rockets, satellites, spacecraft, missiles and other aircraft. With the successful application of high-strength titanium alloy in the aerospace industry, it will gradually expand its application to civilian fields such as marine engineering, automobiles, and daily necessities. [0003] However, in order to meet the needs of wider applications, the comprehensive properties of existing titanium alloy materials, including mechanical properties, need to be further improved. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/03
CPCC22C14/00C22C1/03
Inventor 刘建尊
Owner BEIJING JINYU SHUNDA TECH CO LTD
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